Lenovo A 6000 / Plus Open Source code Available on Lenovo site officially !!

Hello Guys

I a new member of this site, I own a Lenovo A 6000 Plus mobile.

I have found that Lenovo has offficially made available source code for thier devices on their site.

My question is, Can we develop any rom with this, what way we can use this source code.

Link Below

support.lenovo.com/us/en/products/phones/a-series/a6000?TabName=Downloads[/url]

Thank in Advace